Project on transistors and how they work

In summary, a bipolar junction transistor (BJT) is a doped-silicon device with three regions (NOT layers). It is used in an amplifier circuit and an oscillator circuit.
  • #1
runicle
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0
Hey, I'm doing a project on transistors and i need some help on how they work. So far I know that a transistor can amplify the current of the flow of electricity and contains 3 layers 1 being Silicon. Please, I need additional information on transistors (like an hour worth of info).
 
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  • #2
You need to be a bit more specific. What kind of transistor are you looking for (bipolar, MOSFET)? Here are some examples. If you just google for MOSFET, you will find many good sites on this topic.

marlon
 
  • #3
Actually I am being specific on what i need more info on transistors. All the transistors which have silicon layer on it. (marlon thanks for the info on different wiring transistor, I didn't know about that.)
 
  • #4
runicle said:
Actually I am being specific on what i need more info on transistors. All the transistors which have silicon layer on it.
No you are not since every transistor has silicon in it somehow. Even the transistors based upon the Germanium wafers actually exhibit the same structure as any other silicon based transistor. You cannot make a classification in transistor-structure purely based upon what layers are used. That was my point.

(marlon thanks for the info on different wiring transistor, I didn't know about that.)
Here is another site i can really recommend.

marlon
 
  • #5
Discuss the bipolar junction transistor (BJT) which is a doped-silicon device with three regions (NOT layers). Here's a wealth of information. Please ask specific questions and we'll be happy to provide additional information.

http://hyperphysics.phy-astr.gsu.edu/hbase/solids/trans.html

- Warren
 
  • #6
Alright. I need some info that a grade 11 student would understand, like different shapes, sizes and how they work basically. I'd like to see The most common of transistors that grade 11's would mostly see.
 
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  • #7
If you are new to this subject, you should start out from the band theory of solids and how we apply that to semiconductors.
http://hyperphysics.phy-astr.gsu.edu/hbase/solids/band.html"

Then you can understand how pure semiconductors or intrinsic semiconductors conduct electricity.

http://hyperphysics.phy-astr.gsu.edu/hbase/solids/intrin.html"

Then comes doping and the p-type and n-type semiconductors
http://hyperphysics.phy-astr.gsu.edu/hbase/solids/dope.html"

Next is the p-n junction and what happends when the junction is forward biased and reversed bias. This is key to understanding diodes and transistors.

http://hyperphysics.phy-astr.gsu.edu/hbase/solids/pnjun.html"
http://hyperphysics.phy-astr.gsu.edu/hbase/solids/diod.html#c1"

This will make it easier for you to understand how some diodes (like the p-n junction diode) and transistors(like the p-n-p and n-p-n junction transistors) work.
http://hyperphysics.phy-astr.gsu.edu/hbase/solids/trans.html#c1"

As chroot said, if you have any difficulties or questions following the material, you can ask here.

Finally, for some basic applications of transistors, you can check out how the transistor is used in an Amplifier circuit and how it is used in an Oscillator circuit.
Logic gates (like AND, OR and NOT) can be implemented using diodes and transistors. You might want to take a look at that as well.
 
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1. What is a transistor?

A transistor is a semiconductor device that can be used as a switch or an amplifier in electronic circuits. It is made up of three layers of doped materials, typically silicon, which control the flow of current.

2. How does a transistor work?

A transistor works by controlling the flow of current between two terminals, called the emitter and collector, using a third terminal called the base. When a small current is applied to the base, it allows a larger current to flow from the emitter to the collector, similar to how a gate controls the flow of water in a pipe.

3. What are the different types of transistors?

There are two main types of transistors: bipolar junction transistors (BJTs) and metal-oxide-semiconductor field-effect transistors (MOSFETs). BJTs use both electrons and holes for current flow, while MOSFETs use only one type of charge carrier, either electrons or holes.

4. What are some common uses of transistors?

Transistors are used in a wide range of electronic devices, including computers, televisions, radios, and cell phones. They are also used in power supplies, motor control, and many other applications where electronic signals need to be amplified, switched, or converted.

5. What are some potential challenges in working with transistors?

Some potential challenges in working with transistors include overheating, noise interference, and component failure. Additionally, as transistors become smaller and more complex, it can be challenging to design and manufacture them accurately and efficiently.

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